Magnetic properties of melt-spun FeMnAlB alloys

Abstract Magnetic properties of melt spun Fe 89 - x Mn 11 Al x ( x = 2 , 4 , 8 , 15 ) and Fe 87 - y Mn 11 Al 2 By ( y = 6 , 8 , 10 ) alloy series were studied by vibrating sample magnetometry and complex permeability measurements. The saturation magnetization exhibited an initial high value of 210 emu/g followed by a decreasing tendency with increasing Al and B additions (up to 139 emu/g). On the other hand, the initial permeability showed variations within the range 1000–2000, whereas the relaxation frequency displayed a maximum of 2 MHz for the 4 at% Al alloy.